Automatic control for marine engines



April 2l, 1931. l.. AuGusTlNE 1,802,305

AUTOMATIC CONTROL FOR MARINE ENGINES Fild July 31. 1929 2 sheets-sheet 1 N INVENToFg LAugmsirng ATTORNEY April 2l, 1931.-

L. A-UGUSTINE AUTOMATIC ACONTROL FOR MARINE ENGINES Filed Julyv 31. 1929 2 Sheets-Sheet 2 QILLII ,f f/ n 0 wl 3 ,a f@ w .mf @W f r lm .s 21/ .SL N n W ATTORN EY Patented Apr. 21,1931

(PATENT OFFICE IiOUIS AUGUSTNE, OF BALTIMORE, MARYLAND lAUT`O1VlLAlllIC CONTR-'0L MARINE ENGINES Application mea July a1, 1929. serial NQ. 382,571.

My invention relates to automatic control .mechanism for marine engines and an object of the same 1s to provide a mechanism of this character whereby the operation of the engine is controlled incident to the pitching of the ship so that when the ship propeller comes out of the waterv it will not rotate andV when the ship rights itself the engine will be permitted to operate toagain drive the propeller.

Further the invention provides an auto' maticcontrol for marine engines which em- Y bodies a pressure operated piston connected the novel combination of elements, construeV tions and arrangements lot parts andoperaf` tions to be hereinafter more ullydescribed, claimed and illustrated inthe accompanying drawings, wherein:

with the engine control valve, an. electrically actuated valve for controllingthe operating pressure for the piston and a circuit closer which is responsive to the ships movement `tore' andaft. f

Another object of the invention resides in the provision of a governor controlled circuit closer which isk operable to prevent the operation ot the engine in the event of overspeedy from the main supply pipe 17 and communi.-

ing ot the latter.

' Y With the preceding and other objectsv and advantages in mind, the invention consists in Fig. 1u is a plan vlew of fthe invention,

f, and ends of they cylinder v12. A circular armature 23 is VYlixed to each end of the rod 22 and supported adjacent each of these armatures is an electromagnet coil 24, or solenoid, .y the latter being'supportedv against one. side parts being shown in section;

Fig. 2 1s a vertical section line 2--2 of Fig. 1;

Fig. 3-is a horizontal section `on line 3-3 of Fig.2; Y n Fig. 4 is a verticalsectional view of the governor actuated circuit y closer embodied in the invention; and' Fig. 5 is a horizontal section taken on liney '.e-ofFiglQ i c f y Referring to the lnvention in detail a ver-v Vtically disposed pressure cylinder 5 is pro-k videdeinwhichV a piston 6 having a large `head 7 and a small headV 8 is provided. Thev 'i piston 8 operates in the reduced upper VendV 9' of the cylinder 'and attached thereto'visc a piston rod 10 to b e connected with the engine control valve,not shown, inv any conventional manner.

taken on the' For the purpose of controlling the movementof the piston 6 a hollow piston valve 11 is provided and is reciprocable in a vertically disposed cylinder 12 extending parallelto the cylinder 5. kA pair of noncomw,

municating Vconvex passages 13 and 14 are Jformed on the cylinder 12'adjacent its lower end while a third chamber 15 is formed Von Vthe cylinder l'at its upper end. Communi-V to one side of' the pressure cylinderadjacent .its lowerv end and leading from this conduit18 is a U-shaped by-pass 19 having v one end opening intoy the lower end of the pressure cylinder. A branch pipe 20`leads Cates with the upper end of the pressure cylinder. Leading from the upper end of the against the piston head 7. In order to actu- I ate the sliding pistonV valve 11 it is fixed to a rod 22 passing centrallythrough the valve weighty 32fyis'iixed to the under side ofthe hub 30120 normally support the erm 29.111

While I have illustrated one switch in the circuit it is desirable to have them at predetermined points in the ship.

What is claimed is:

l. In an automatic control for marine engines, a pressure cylinder, a control valve actuating piston arranged in the pressure cylinder, a cylinder having communication With the pressure cylinder, means for sup-v plying fluid Apressure to the cylinder, a slide valve in the cylinder, a stem attached thereto and extending from opposite ends of the cylinder, an armature fixed to each end of the stem, and an electro-magnetic coil arranged opposite each armature, and a circuit closer operable by the ships movement fore and aft to complete electrical circuit to the coils to shift the valve to a position to permit Huid pressure to enter the pressure cylinder or to move the valve to a position to sever communication between the cylinder and pressure cylinder.

2. In an automatic control for marine engines, a pressure cylinder, a control valve actuating piston arranged in the pressure cylinder, a cylinder having communication With the pressure cylinder, means for supplying Huid pressure to the cylinder, a slide valve in the cylinder, a stem attached thereto and extending from opposite ends of the cylinder, an armature Xed .to each end of the stem, an electro-magnetic coil arranged opposite each armature and a governor actuated circuit closer responsive to the ,speed of the engine shaft and operative to complete an electrical circuit to the coils to shift the valve to a position to permit fluid pressure to enter the pressure cylinder or to move the valve to a position to sever communication between the cylinder and pressure cylinder.

Louis AUGUSTINE. 

